Best Known (204, 204+28, s)-Nets in Base 4
(204, 204+28, 299593)-Net over F4 — Constructive and digital
Digital (204, 232, 299593)-net over F4, using
- t-expansion [i] based on digital (203, 232, 299593)-net over F4, using
- net defined by OOA [i] based on linear OOA(4232, 299593, F4, 29, 29) (dual of [(299593, 29), 8687965, 30]-NRT-code), using
- OOA 14-folding and stacking with additional row [i] based on linear OA(4232, 4194303, F4, 29) (dual of [4194303, 4194071, 30]-code), using
- discarding factors / shortening the dual code based on linear OA(4232, 4194304, F4, 29) (dual of [4194304, 4194072, 30]-code), using
- an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- discarding factors / shortening the dual code based on linear OA(4232, 4194304, F4, 29) (dual of [4194304, 4194072, 30]-code), using
- OOA 14-folding and stacking with additional row [i] based on linear OA(4232, 4194303, F4, 29) (dual of [4194303, 4194071, 30]-code), using
- net defined by OOA [i] based on linear OOA(4232, 299593, F4, 29, 29) (dual of [(299593, 29), 8687965, 30]-NRT-code), using
(204, 204+28, 1398105)-Net over F4 — Digital
Digital (204, 232, 1398105)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4232, 1398105, F4, 3, 28) (dual of [(1398105, 3), 4194083, 29]-NRT-code), using
- OOA 3-folding [i] based on linear OA(4232, 4194315, F4, 28) (dual of [4194315, 4194083, 29]-code), using
- 1 times truncation [i] based on linear OA(4233, 4194316, F4, 29) (dual of [4194316, 4194083, 30]-code), using
- construction X applied to Ce(28) ⊂ Ce(26) [i] based on
- linear OA(4232, 4194304, F4, 29) (dual of [4194304, 4194072, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(4221, 4194304, F4, 27) (dual of [4194304, 4194083, 28]-code), using an extension Ce(26) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,26], and designed minimum distance d ≥ |I|+1 = 27 [i]
- linear OA(41, 12, F4, 1) (dual of [12, 11, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(41, s, F4, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X applied to Ce(28) ⊂ Ce(26) [i] based on
- 1 times truncation [i] based on linear OA(4233, 4194316, F4, 29) (dual of [4194316, 4194083, 30]-code), using
- OOA 3-folding [i] based on linear OA(4232, 4194315, F4, 28) (dual of [4194315, 4194083, 29]-code), using
(204, 204+28, large)-Net in Base 4 — Upper bound on s
There is no (204, 232, large)-net in base 4, because
- 26 times m-reduction [i] would yield (204, 206, large)-net in base 4, but